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Synthesis of cinnoline 1-oxides by the reaction ofortho-fluoronitrobenzenes with enediamines

✍ Scribed by Vypolzov, A. V.; Dar’in, D. V.; Lobanov, P. S.

Book ID
118810007
Publisher
Springer
Year
2012
Tongue
English
Weight
213 KB
Volume
61
Category
Article
ISSN
1573-9171

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✍ Mazhukin, Dmitrii G. ;Tikhonov, Aleksei Ya. ;Volodarsky, Leonid B. ;Evlampieva, 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 506 KB

## Abstract The reaction of the ninhydrin (1) with 1,2‐bishydroxylamines 2a–c affords dihydroindeno[1,2‐__b__]pyrazine __N__,__N__′‐dioxides 5a–c. The intermediates hexahydro‐ and tetrahydroindeno[1,2‐__b__]pyrazines 3a and 4c, which have been isolated, are easily transformed into 5a, c. Heating of